$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd.git /var/lib/mock/dist-oc9-build-182840-80193/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc9-build-182840-80193/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 5ac9af1d7730b95e09754d4cf2c558e28c29a221:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new ref]         5ac9af1d7730b95e09754d4cf2c558e28c29a221 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5ac9af1 import systemd-255-14.tl4.ap.3